The Analysis of Solar Energetic Particles

CONCLUSION‣ Energy spectra of SEPs in the large events are stronglyaffected by particle-wave interaction leading to Alfvén waveamplification and fluxes distortion.‣ The “time-of-maximum” spectrum in the large SEP eventsseems not to reflect acceleration on the Sun. However it isimportant as a convenient event characteristic, especially forthe applied aspects.‣ The first to arrive energetic particles can give an insight in thesolar processes. Timing is very important from bothobservational and modeling points of view.‣ The first to arrive particle spectrum of the 20 January 2005event is likely a result of the acceleration in the DC electricfields or stochastic scattering with fast shock waves or Alfvénwaves generated at the magnetic reconnection site.